Cited by 184Thyroid Cancer Diagnosis and TreatmentProtein Tyrosine PhosphatasesProtein Kinase Regulation and GTPase Signaling

A mutation at tyrosine 1062 in MEN2A-Ret and MEN2B-Ret impairs their transforming activity and association with shc adaptor proteins

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Asai, Naoya, Murakami, Hideki, Iwashita, Toshihide, Takahashi, Masahide·1996·Journal of Biological Chemistry

Abstract

Germ line mutations of the ret proto-oncogene are associated with the development of three dominantly inherited neoplastic disorders, multiple endocrine neoplasia (MEN) 2A, MEN 2B, and familial medullary thyroid carcinoma. It has been demonstrated that the mutations result in constitutive activation of the Ret protein, leading to transformation of NIH 3T3 cells. In the present study we investigated the role of tyrosine residues present in the carboxyl-terminal sequence for the transforming activity of Ret with the MEN 2A or MEN 2B mutation (MEN2A-Ret or MEN2B-Ret). Substitution of phenylalanine for tyrosine 1062 (designated Y1062F) markedly impaired the transforming activity of both MEN2A-Ret and MEN2B-Ret, whereas substitution or deletion for four other tyrosines (codons 981, 1015, 1090, and 1096) did not affect their activity. The Shc adaptor proteins bound to the MEN2A-Ret and MEN2B-Ret proteins and were phosphorylated on tyrosine in the transfectants. The binding of Shc to the Y1062F mutant proteins was reduced by approximately 80%, indicating that tyrosine 1062 is a major binding site for Shc. In addition, phosphopeptide analysis of MEN2A-Ret demonstrated that tyrosine 1062 represents an autophosphorylation site of the mutant Ret proteins.

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Crossref · 10.1074/jbc.271.30.17644

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  • GDF-15 forms a complex with GFRAL and RET on the cell surface, then triggers intracellular signaling through the ERK pathway.

    “GDF-15 forms a complex with GFRAL and RET on the cell surface, then triggers an intracellular signaling cascade through the extracellular signal-related kinase (ERK) pathway (40, 113).”

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Authors
Asai, N., Murakami, H., Iwashita, T., & Takahashi, M.
Affiliations
Nagoya University (JP)
Corresponding author
Takahashi, Masahide
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1996-07
Volume
271
Issue
30
Pages
17644-17649
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2057936106
Cited by
184
References
36
Citations by year
2025: 2 · 2024: 2 · 2023: 4 · 2022: 2 · 2021: 1 · 2020: 3 · 2019: 1 · 2017: 2 · 2016: 2 · 2015: 8 · 2014: 2 · 2013: 3 · 2012: 5
FWCI
6.69
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Cancer Diagnosis and Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
Keywords
RET proto-oncogene, multiple endocrine neoplasia type 2A, multiple endocrine neoplasia type 2B, Shc adaptor protein, autophosphorylation sites, constitutive activation, transforming activity, familial medullary thyroid carcinoma
MeSH terms
Src Homology 2 Domain-Containing, Transforming Protein 1, Proto-Oncogene Mas, Amino Acid Sequence, Animals, Cell Transformation, Neoplastic, Humans, Molecular Sequence Data, Mutation, Multiple Endocrine Neoplasia, Proteins, Proto-Oncogene Proteins, Tyrosine, Signal Transduction, Multiple Endocrine Neoplasia Type 2a, Multiple Endocrine Neoplasia Type 2b, Receptor Protein-Tyrosine Kinases, Drosophila Proteins, Adaptor Proteins, Vesicular Transport, Adaptor Proteins, Signal Transducing, Proto-Oncogene Proteins c-ret, Mice, Shc Signaling Adaptor Proteins

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